Valve for pneumatic tires.



I. II. NEVI/SOM.

VALVE FOR PNEUMATIG TIRES. APPLICATION FILED No.9. 1912.

Lgr?. Patented Jn. 25, 1916.

IIIIIIIIIi JQSEPH lll'. NEWSOM, GIF ST. LOUIS, MISSURI, ASSGNOR, BY MESNE ASSIGNMENTS, 'IO

WILLIAM H. MBGENS, OIF S". LDUS, MISSGUEE.

'VALVE FOR NEUMTC TERES.

Specification of Letters Patent.

latentetl Jan. 25.)

Application led December 9, w12. Serial No. 735,641.

To all whom t may concern.

Be it known that l. JOSEPH N. Ynusoit a citizen of the United States, residingl at St. Louis, State of lilissouri, havel invented a new and useful Valve for Pneumatic Tires, of which the following is a specication.

My invention relates to valves particularly intended 'for use 0n pneumatic or inliatalole tires, the principal object of my inv vention being to construct a comparatively siniple,'. inexpensive valve which is positive in action., and which may be readily removed from the rim or' a Wheel without injury to any of the part-s of the valve.

A 4further object of my invention is to construct a perfectly air-tight valve without the use of springs and other delicate parte which are liable to become easily broken and unserviceallle.

A puncture of a pneumatic tire necessitates the removal ol the casingl and the inner tube, and as a result, the stem must he re-. moved from the rim. anal under ordinary circumstances the valve housing generally seatecl very tightly in the rim, and in reinoving said valve a hammer or like tool is often used, and as a result., the valve housing battered flown with injury to the threads tin-Breen7 and very often rendering some of lthe parts Within the valve inoperative.

.l propose to provide a i.faire 'levoitl of springs and small parts, anti to cons 1ct the valve housing and cap on the outer enti thereof in a strong and substantial manner so that the housing will readily vvitlistantl blows oil a hammer or like tool when it is removed from: the ivlieel rim.

By virtue of my improve@L construction the` valve proper is located at the loner cuil of the valve housing within the tune to which the valve 'is connected, and thus the disk of' the valve proper anti the valve are protected so that a tight joint alii/*aye maintained between the valve tlislr and seat.

To the above purposes my invention consists in certain novel features ol construe tion and arrangement of parts hereinafter more fully described, claimed and shown in the elisir il counte Vnorn'mlly occupies apos valve seat. Fig. 3 is a side elevational View of the valve stem. Fig. is a side elevational view of the sore f* cap that is normally positioned 'on the outer end ot' the valve housing. Fig. 5 is a plan vieu' of the screw cap. Fig. is a view of the underside of the screw cap. Fig. 7 is a plan view of the clisk which carries the valve pacliinf. Fig. 8 is a view of the underside of this disk. Fig. 9 is a. side elevational View of the disk. Fig. l0 is a plan vieuv ol the ralve housing with the screwY cap removed. Fig. l1 is a view looking at the lower end oi the valve housing with the valve removed. Fig. l2 is a plan view oi the valve disk ici-nun(r a part olf' the valve, and which disk engages directly against the valve seat on the underside of the housing.

Referring by numerals to the accompanying drawing... l designates the valve housivliicln is preferably ol cylindrical forni and provided with a centrally ari-angeli port Forn'iecl integral with the lovver enti of this housing' is a (lislt 3. underside ol which is flat and i'orins the valve seat. and the end of the port 'which passes through urli, as (le. uated hy 1l. The housing l ...zn/led. as designated lvv 5, imm-e`.late,lyv arent the ilislt il in order to receive a nut lf3 use@ for attaching; the valve the inflatable tube llhen the 'valve is attached to the tube the disk is located Within saicl tuhe azul a packing' ring 'l' is positionerfi on the outer surface of th tube around 'the opening therein, said packi ing i ing lui-ing clamped in position h v means of the nut The port is enlargetl at the upper enti of the valve housing. as designated hy lo forni an air chamber. cap S) is loosely seated on the upper eml` of the valve housingn and normally closes the port or passage-way tliletlirglu-grh. This cap is n i oecl with a centrally arranged threaded aperture l0. and l'ormev'l in the top surface of e small rofl, botn ends ot which are threaded. saudi stein heine' smaller 1n ilianithan the port il. and the tlireiuleu upper end oi salti stein receives a out 13 which ion in the air enaniber 8 'and prevents the stem dro mmf! 1 Y 1 2;: turc/ugh the valve housine. (arl-ieri ov the n 1 l c; lower enel or. line stern is a valve comprising' a metal elisir having a centrally arranged lug '15 which receives the threaded lower end of the stem 12, and the upper end of this lug isbeveled, as designated by 16 in order that the valve may properly center itself upon the seat the lug enters the countersunk end l ot' the port 2. Positioned is a gasketor packing disk 17, of rubber, leather or liber, the top face of which packing disk is adapted to lit against the flat under-face of the disk 3.

lll/hen the tire is inflated and the valve is in use the cap 9 is seated on the upper end of the housing 1 with the threaded upper end of the stem 12 seated in the threaded aperture 1U in said cap, and thus when the cap is screwed upon the valve stemthe valve comprising the parts 14 and 17 are drawn against the valve housing so as to maintain a perfectly tight joint betweenthe Gasket 1T and the valve seat on the underside of the disk cap 9 is removed, which permits the valve and stem to drop downward with respect to the valve housing until the nut 13 rests on the shoulder between the port 2 and air chamber S, and the end of the tube from the pump or source of compressed air is now ap plied to the outer`cnd of the valve housing, and when sutlicient compressed air has been lorced into the inflatable tube, the pressure of said air against the disk 14 ywill cause the same to move upward, thereby causing the gasket 17 to engage the valve Seat, and thus the valve performs the function of a Check valve to prevent thel compressed air from escaping through the valve housing. lVhen the desired amount ol compressed air has been forced into the inflatable tube the cap 9 is seated on the upper end of the valve housing, thereby closing the port through the valve housing, aud as the valve stem 12 is engaged, the same is drawn upward, and consequently the gasket is maintained tightly upon the valve seat.

1he cap S) is made sullicicntly heavy to withstand blows of a hammer or like tool when the valve is removed from the wheel rim, and a recess 11 is formed in the top ol' said cap to prevent the threads in the upper when the upper end of' on top of the disk 14:,

3. AWhen the tire is to be inflated the end of the aperture 10 from being battered when the cap is struck with a hammer or like tool.

.A valve of my improved construction is comparatively simple, can be easily and cheaply manufactured, is devoid of springs and like. parts of order easily, and as the gasket ofthe valve is maintained in close contact with the valve seat, and said seat vis comparatively broad, liability of leakage of air through the valve is reduced to a minimum.

It will be readily understood that minor changes in the size, form and construction o the various parts of my improved valve may be made and substituted for those here` 1n shown and described'without departing4 from the spirit of my invention, the scope of which is set forth in the appended claim.

claim:

In a valve of the class described, a tubular valve housing, a disk on the lower end thereof, the underface of which disk is flat.` and the end of the opening into the tubular housing being counter-sunk, a valve rod in the opening through the valve housing, a disk fixed to the lower end of said valve rod, a lug projecting upwardly from the center of said disk, which lug receives the lower end of the valve rod, the upper end of said lug being conical and adapted to engage in the counter-sunk lower end of the opening through the valve housing, the top of the disk on the lower end of the valve rod being flat, and a gasket arranged on the flat face of said disk, the upper face of which gasket is flat and adapted to engage the flat lower face of the disk on the valve housing, and the .lug on the disk carried by the valve rod being of such length as to permit the conical upper end of the lug to project above the top of the gasket when the parts areassemb ed. In testimony whereof I hereunto affix my signature in the presence of two witnesses, this 30th day of November, 1912.

JOSEPH N. NEVSOM.

Witnesses:

SAML. CURTIS, F. H. ALLEN.

which are liable to get out 

